Name
Abstract | ||
|---|---|---|
As a new joint source-channel coding scheme, the double polar (D-Polar) codes have been proposed recently. In this letter, a novel joint source-channel decoder, namely the joint successive cancellation list (J-SCL) decoder, is proposed to improve the decoding performance of the D-Polar codes. We merge the trellis of the source polar code and that of the channel polar code to construct a compound trellis. In this compound trellis, the variable nodes corresponding to the information bits of the channel polar code and the variable nodes representing the high-entropy bits are merged into the joint source-channel (JSC) nodes. Based on the compound trellis, the J-SCL decoder is designed to recover the source messages by combining the source SCL decoding and channel SCL decoding. The proposed J-SCL decoder doubles the number of the decoding paths for each JSC node and low-entropy node, and then discard all but the
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paths with the smallest joint path-metric (JPM). For the JSC node, the JPM is updated considering both the channel decision log-likelihood ratios (LLRs) and the source decision LLRs. Simulation results show that the J-SCL decoder outperforms the turbo-like BP (TL-BP) decoder with lower complexity. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/LCOMM.2022.3179644 | IEEE Communications Letters |
Keywords | DocType | Volume |
Double polar codes,joint source-channel decoder,joint successive cancellation list decoder | Journal | 26 |
Issue | ISSN | Citations |
8 | 1089-7798 | 0 |
PageRank | References | Authors |
0.34 | 12 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yanfei Dong | 1 | 1 | 1.04 |
| Kai Niu | 2 | 561 | 86.80 |
| jincheng dai | 3 | 6 | 3.85 |
| Sen Wang | 4 | 1 | 0.70 |
| Yifei Yuan | 5 | 57 | 7.26 |